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* [Bug threads/31568] New: GDB fails with raw clone syscalls
@ 2024-03-28 14:19 rvansa at azul dot com
0 siblings, 0 replies; only message in thread
From: rvansa at azul dot com @ 2024-03-28 14:19 UTC (permalink / raw)
To: gdb-prs
https://sourceware.org/bugzilla/show_bug.cgi?id=31568
Bug ID: 31568
Summary: GDB fails with raw clone syscalls
Product: gdb
Version: 12.1
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: threads
Assignee: unassigned at sourceware dot org
Reporter: rvansa at azul dot com
Target Milestone: ---
I am trying to debug into CRIU (https://criu.org/), though I have seen this
problem in other instances where the clone/clone3 syscall is invoked directly.
When this is executed GDB prints
```
Cannot find user-level thread for LWP 341734: generic error
```
After this, `info thread` won't show the new thread. It is marked as being
traced (but I guess that all threads from traced process show that).
```
$ cat /proc/341519/task/341734/status
Name: java
Umask: 0002
State: t (tracing stop)
Tgid: 341519
Ngid: 0
Pid: 341734
PPid: 341503
TracerPid: 341503
...
```
I can switch back to the original thread using `thread 1` but is is marked as
running and I cannot interrupt it (neither using ctrl+C nor with signal
SIGINT).
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2024-03-28 14:19 [Bug threads/31568] New: GDB fails with raw clone syscalls rvansa at azul dot com
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